PTFE film is made of polytetrafluoroethylene dispersion resin, premixed, extruded, calendered, bidirectional stretching and other special processes of the production of microporous film, divided into clothing film, Puwei waterproof film, filter film, purification film.
4. The cross section of the membrane is a network structure, and there are very complex changes in the three-dimensional structure of the holes, such as network connectivity, hole inlaid sleeve, and channel bending, etc. There may be a number of microholes to form a channel, or a microhole may be connected with a number of channels.
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Lanzhou monitoring is a kind of precision instrument. It is necessary to do the dustproof work of Lanzhou surveillance camera. What should we pay attention to during maintenance?
Since the surveillance cameras are running all year round, any of the cameras can now be waterproofed and have strong light, so inevitably the lens will be covered with dust and other particles, which will seriously affect the clarity of the monitoring scene. It will also cause damage to the equipment. Therefore, it is very important that the dustproof and anticorrosive work of the Lanzhou surveillance camera is done. The root cause of anticorrosion is dust prevention. Only when the dust prevention work is done, the dustproof and anticorrosive problems can be solved. In places where the air humidity is high, the constructor must select or adjust the installation position of the surveillance cameras in Lanzhou and improve the moisture-proof capacity of the installation equipment or do a good job of daily moisture-proof measures to solve them.
The professional dust-proof devices for surveillance cameras include air compressors and special air curtains.
If air compression equipment is used to transport the gas to the shield with air curtain, air curtains can be formed on the glass in front of the Lanzhou surveillance camera to protect the camera glass cleanly without affecting the monitoring scene.
If you use a protective cover with a wiper, you can also take the solution to the problem of water. If there is no water, it is dry and is not recommended.
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Introduction and microstructure of PTFE membrane
PTFE film is made of polytetrafluoroethylene (PTFE) as raw material by special process, calendering, extrusion, bidirectional stretching and other methods of microporous film.PTFE membrane can be divided into clothing membrane, air filtration membrane, air purification membrane.PTFE film has fibrous microporous structure, porosity is more than 85%, there are 1.4 billion micropores per square centimeter, pore size range 0.02μm -- 15μm.
The main structure
1. The surface morphology of PTFE microporous film is a spider mesh microporous structure.Pore is formed between the microfibers, and the direction of microfibers is basically parallel to the stretching direction.The junction of the fiber bundle is a node, which is formed by the entanglement of many microfibers.
2.PTFE membrane is an asymmetrical membrane, and there are differences in micropore size between the positive and negative sides of the membrane.
3. The cross section micropore size of the membrane is larger than that of the surface micropore size, and the vertical and horizontal micropore size is also different, and the longitudinal micropore size is larger than the transverse micropore size.
Lanzhou Security Monitoring Company teaches you how to protect your camera from dust?
Lanzhou is the core of the northwestern city. The cities are distributed on both sides of the Yellow River. The population is also more concentrated, so traffic congestion has become an inevitable factor, which means that traffic accidents occur frequently. In order to prevent accidents and violations of road traffic in the city, the road installed more electronic probes and Lanzhou monitoring, then how to prevent dust in the Lanzhou surveillance camera? The following Xiaobian to teach the identity of the camera in Lanzhou security monitoring company how to prevent dust!